CVE-2026-42327

high Red Hat
CVSS v3 Base Score
9.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS Score
0.0%
Exploitation probability in 30 days
Top 94% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
High
Availability
None
Published: May 14, 2026 (56 days ago)
Last Modified: May 14, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in rust-openssl, a library providing OpenSSL bindings for the Rust programming language. A remote attacker could exploit this vulnerability by presenting a specially crafted certificate. This certificate, containing non-UTF-8 characters in its OCSP (Online Certificate Status Protocol) access location, can cause the application to process an invalid string. This leads to undefined behavior, which may allow an attacker to achieve arbitrary code execution or cause a denial of service.

CWE

CWE-475

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 github.com